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Over some period of time, I have used a couple tools for local TLS scans and diagnostics. One of them may include pointers for whatever situation you have. Tool Description From Current? ...
For reasons of my own, I have services on my LAN which use HTTPS and I create my own certificates for these. Over the years, the usage of TLS has evolved considerably. Many features that were once...
On a default Arch install, faillock makes it so that if you enter the sudo password wrong too many times, even the correct password will be rejected until the timer is up. At the same time, you ca...
I am trying to debug an issue with audio playback in MuseScore. During this process, I realised that I had/have no clue about audio playback in Linux (or in general for that matter). I already le...
This can be done by setting the LDAPTLS_REQCERT environment variable to never. For example like this when issuing the command: LDAPTLS_REQCERT=never ldapsearch -H ldaps://example.com:636 ...
How to ignore server certificate when using ldapsearch command-line tool? Of course this isn't something you should be doing regularly, but it would be a handy asset for troubleshooting.
Use netstat -lp. Typically in such a scenario you will likely be mostly interested in IP sockets, in which case you can also add -A inet,inet6. To get numerical port numbers, add -n as well. (See ...
Sometimes your programs fail because the network port they are trying to use is already in use by some other process. How to find out what this other process is?
I'm not an expert on this at all, but so far there are no answers, so I'll try one. "Synchronization" is in the context of multithreading. For those who don't know how multithreading works: Multi...
TL;DR When pacman bugs you for sudo, in bash or zsh (and possibly others but I haven't verified that), run sudo !! Full Answer As I see it you have 2 options: command substitution or an alias (o...
You can fake out git as long as you have some empty Git repository available somewhere. git --git-dir=path-to-empty-repo/.git \ ls-files --others --exclude-standard
How can a file list be manually filtered with a gitignore file. I want to do the equivalent of git ls-files, but it should work even if I remove .git, so I can't use git(1). Currently, I'm doing ...
In Unix systems like Linux, some commands are considered dangerous and only the root user can run them. Normally, you don't login as root. So when you want to run dangerous commands, you must first...
I think the typical way to do this uses wc ("word count") with the -l ("lines") option. $ wc -l /path/to/file 47 /path/to/file $ wc -l </path/to/file 47 $ cat /path/to/file | wc -l ...
One way is to use grep: $ grep --count ^ /path/to/the/file The ^ character matches a start of a new line, so it basically counts the number of starting lines.
How to get the number of lines in a file? I.e. for a file like this: Line one Line 2 Final line I would like to do something like this: $ count-lines /path/to/the/file/above 3
You don't. sudo is for there for security purposes. If you alias it as sudo pacman than you can mess up without knowing. You can login as root su - to execute consecutive commands.
Init is starting all other processes. It's first process started by kernel. After that init uses init scripts to start all other needed functionality to boot up system, like mounting volumes, daem...
How does the init process play a role in the booting of Linux?
When I run Kmail on i3, and then close it, it appears to continue running some stuff in the background. For example, I periodically get notifications about new mail from dunst, even though I have c...
Wine has options for "Synchronization", like "Esync" or "Fsync". What do these actually do? What is the purpose of such an option? What is the impact to normal usage of a Windows program in Wine?
Piper can be used for this. All mice supported by Piper (actually libratbag) are a result of the community reverse engineering the mouse protocol. It will not support all mice, but only selected on...
How can I remap buttons on my mouse, especially for more exotic ones like MMO mice?
I'm quite certain that rsync is not able to deduce that /path/to/src/folder_a/file_w on one side of the transfer is identical to /path/to/src/folder_c/file_w on the other side of the transfer. The...
